Bookbinding and the Conservation of Books
A Dictionary of Descriptive Terminology

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caustic

A term used with reference to the hydroxides of alkali and alkaline earth metals, such as sodium, potassium, calcium, barium, etc., so called because they possess corrosive properties. In very dilute solutions, caustics are used to neutralize acidity in paper, to control pH in the bleaching of paper furnishes, etc., and in very strong solutions in leather manufacture to lime and unhair hides and skins.




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